Enhanced oil recovery composition

Patent · Tue Jun 28 04:00:00 EDT 1988

OSTI ID:6785223

Hsieh, W C

A stable latex composition is described which consists of: water; at least one polymer comprising form about 45 to about 65 weight percent ethylacrylate monomer residue, from about 10 to about 45 weight percent methylacrylic acid monomer residue, and from about 20 to 30 weight percent acrylic acid monomer residue; and from about 2 to about 10 parts per 100 parts of monomer of a co-surfactant system comprising: (a) at least one nonylphenol polyethylene oxide ether sulfate, wherein the polyethylene oxide adduct of the nonylphenol polyethylene oxide either sulfate is comprised of at least about 20 moles of ethylene oxide monomer residue; and (b) at least on propoxylated, ethoxylated propylene glycol nonionic surfactant block polymer, wherein the ether sulfate and block polymer are provided at a ratio to each other of from about 1:2 to about 10:1.

• Assignee: Union Oil Co. of Calif., Los Angeles, CA
• Patent Number(s): US 4753973
• OSTI ID: 6785223
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACRYLIC ACID
ALCOHOLS
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
DISPLACEMENT FLUIDS
ELASTOMERS
ENERGY SOURCES
ENHANCED RECOVERY
ETHERS
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GLYCOLS
HYDROXY COMPOUNDS
LATEX
MONOCARBOXYLIC ACIDS
MONOMERS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROLEUM
POLYETHYLENE GLYCOLS
POLYMERS
RECOVERY
RUBBERS
STIMULATION
SULFATES
SULFUR COMPOUNDS
SURFACTANTS
WELL STIMULATION
WELLS